Forecast Details for San Francisco, CA

Recent Locations: Greensboro, NC Las Vegas, NV San Francisco, CA

Current Alerts for San Francisco, CA: Beach Hazards Statement High Surf Advisory

Overnight: Clear, with a low around 50. North wind around 7 mph.

Thursday: Sunny, with a high near 68. North northeast wind around 7 mph.

Thursday Night: Mostly cloudy, with a low around 52. West northwest wind 3 to 5 mph.

Friday: Partly sunny, with a high near 66. Light and variable wind becoming west around 5 mph in the afternoon.

Friday Night: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 51. West northwest wind 3 to 5 mph.

Saturday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 64.

Saturday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 50.

Sunday: A chance of rain after 4pm. Areas of fog before 9am. Otherwise, partly sunny, with a high near 64.

Sunday Night: A chance of rain, mainly before 10pm. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 52.

Monday: A slight chance of rain after 10am. Mostly cloudy, with a high near 62.

Monday Night: A slight chance of rain. Partly cloudy, with a low around 48.

Tuesday: A chance of rain. Partly sunny, with a high near 59.

Tuesday Night: A chance of rain. Mostly cloudy, with a low around 47.

Wednesday: A chance of rain. Partly sunny, with a high near 57.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

Weather Topic: What are Stratocumulus Clouds?

Home - Education - Cloud Types - Stratocumulus Clouds

Next Topic: Stratus Clouds

Stratocumulus clouds are similar to altocumulus clouds in their fluffy appearance, but have a slightly darker shade due to their additional mass.

A good way to distinguish the two cloud types is to hold your hand out and measure the size of an individual cloud; if it is the size of your thumb it is generally an altocumulus cloud, if it is the size of your hand it is generally a stratocumulus cloud.

It is uncommon for stratocumulus clouds to produce precipitation, but if they do it is usually a light rain or snow.

Next Topic: Stratus Clouds

Weather Topic: What are Wall Clouds?

Home - Education - Cloud Types - Wall Clouds

Wall Clouds Next Topic: Altocumulus Clouds

A wall cloud forms underneath the base of a cumulonimbus cloud, and can be a hotbed for deadly tornadoes.

Wall clouds are formed by air flowing into the cumulonimbus clouds, which can result in the wall cloud descending from the base of the cumulonimbus cloud, or rising fractus clouds which join to the base of the storm cloud as the wall cloud takes shape.

Wall clouds can be very large, and in the Northern Hemisphere they generally form at the southern edge of cumulonimbus clouds.

Next Topic: Altocumulus Clouds